The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 1987
Filed:
Jan. 28, 1985
Applicant:
Inventors:
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
34082516 ; 371 15 ; 371 22 ; 375 10 ;
Abstract
In bus systems, the subscriber stations transmitter/receiver of which each are connected to a bus line via a transmitter/receiver in a low impedance state, the problem exists that in the event of a disturbance of a transmitter or a short circuit at a transmitter, the bus line is coupled to a constant potential and thereby blocked. In order to prevent this, electronic switches which are switched into conduction only during transmission and have otherwise high impedance are connected between the outputs of the transmitters and the bus line.